What is the pore size of RO membrane? Learn the basics in plain English!

Hey guys, it’s your old buddy back again with another one of my little experiments. Today, we’re diving into something a bit technical, but super important if you’re into water filtration and stuff like that – the pore size of RO membranes. I’ve always been the hands-on type, so I decided to check out these RO membranes for myself and see what’s up.

So, I grabbed a standard residential RO membrane. You know, the kind you’d find in most homes? It looked like a tightly wound sheet, pretty unassuming. These things usually measure about 1.5-1.8 inches in diameter and 10-12 inches in length, fitting into a 12-inch housing with 1/8″ female threaded connections. I made sure to get the standard size – gotta keep things consistent, right?

Now, the fun part. I started digging around to find out the pore size. The numbers I was seeing were all over the place, from 0.0001 to 0.001 microns. That’s crazy small! It got me thinking, how do they even measure these things? I read that some folks use fancy methods to find a distribution of pore sizes, and the average is like 0.25–0.30 nm. But for us regular folks, we just need to know that RO membranes are the finest out there, blocking out almost everything, even salt and tiny organic stuff.

I found some more specific numbers, too. Some sources said 0.22-0.45 micro m, others mentioned 0.1 – 1 nm. But the most common range I kept seeing was 0.001-0.0001 microns. That’s what most home water purification systems use. It’s wild to think about how something so small can make such a big difference in water quality.

So, here’s the deal. The pore size of an RO membrane is tiny. We’re talking about something so small, it’s hard to even imagine. But this tiny size is what makes these membranes so effective. They block out all the bad stuff and let you have clean, pure water. I’m no scientist, but I think it’s pretty cool how this all works.

Anyway, that’s my little adventure for today. I hope you found it interesting. I always enjoy sharing these things with you all. It’s like we’re learning together, right? And remember, I’m just a regular guy who likes to tinker and figure things out. If I can do it, you can too!

Stay tuned for more, and keep exploring! Catch you in the next one!